ghsa-xf23-pxxh-7q46
Vulnerability from github
Published
2024-05-01 15:30
Modified
2025-09-18 18:30
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Details

In the Linux kernel, the following vulnerability has been resolved:

xen/evtchn: avoid WARN() when unbinding an event channel

When unbinding a user event channel, the related handler might be called a last time in case the kernel was built with CONFIG_DEBUG_SHIRQ. This might cause a WARN() in the handler.

Avoid that by adding an "unbinding" flag to struct user_event which will short circuit the handler.

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{
  "affected": [],
  "aliases": [
    "CVE-2024-27067"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-05-01T13:15:50Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nxen/evtchn: avoid WARN() when unbinding an event channel\n\nWhen unbinding a user event channel, the related handler might be\ncalled a last time in case the kernel was built with\nCONFIG_DEBUG_SHIRQ. This might cause a WARN() in the handler.\n\nAvoid that by adding an \"unbinding\" flag to struct user_event which\nwill short circuit the handler.",
  "id": "GHSA-xf23-pxxh-7q46",
  "modified": "2025-09-18T18:30:21Z",
  "published": "2024-05-01T15:30:36Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-27067"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/35485dad6e28f9b17884764d4692b1655cb848d0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/51c23bd691c0f1fb95b29731c356c6fd69925d17"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/99e425032c6ec13584d3cd33846e0c7307501b47"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9e2d4b58c1da48a32905802aaeadba7084b46895"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}


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